Non-hysteretic superconducting 2-port random access memory cell

摘要

PURPOSE: To obtain a memory cell using a non-hysteretic superconductive quantum interference device(SQUIDs). ;CONSTITUTION: When a write signal is high, a current does not flow in a control inductor of a write SQUID 80 and the write SQUID becomes superconductive so that a data input signal is passed through an input data terminal 92. At this time, if an input data signal is high, a SQUID 88 becomes resistant and a cell status terminal 90 becomes a high voltage of a voltage Vjj. If an input data signal is low, the status terminal 90 becomes an earth potential. Thus, the status terminal 90 depends on a status of the input data signal on the input data terminal. In reading out from the cell status terminal 90, a data signal held from a cell is transferred to an output load resistor 94 by inputting the readout signal to a control inductor of a SQUID 84.;COPYRIGHT: (C)1995,JPO